Portable tie-boring machine



June 24, 1930 TRIANA I `'1,767,327

PORTABLE TIE BORING MACHINE' I.

Filed May 24, '1928 S sheets-sheet '2 ATTORNEY,

June 24, 1930. J. 'TRIANA PORTABLE TIE I BORING IAQHINE Filed May24,-.1928 s snefssneet s h Patented June 24, 1930 y UETEDSTATES :PA

JORGE TRIANA, OEBOGOTA, COLOMBIA, ASSIGNOR TO TRACK SPECIALTIES COMPANY,

j OENEW YORK, N.,Y., A. CORPORATION OF NEVI- YORK Application filed May`2,4,

j My invention relates to mach-inesfor boring holes in railroad ties toreceivethespikes or other fastening means kwhereby a Arail is secured inpositionmuponatie, andsaid invention has 'for its object to provide asimple, convenient, and inexpensive machine for simultaneously boring aplurality of properly positionedl holes in a tie.

Further, said invention has for its object to provide a machine whichmay bereadily adapted to bore a plurality .of duly positionedholesforjfastening either narrow or broad gauge track, and which maybereadily adjusted to provideholes for thesecurement of rails whose basesmay be of different widths.. I j i r j Further, said invention has forits object kto provide a relatively light, readilyportable lmachinehavingra suitable support orV .base for receiving the tie to beboredyandmeaus for conveniently securing a tie, of any de- Y' siredshape firmly and positively in position therein while` the sameisbreingpacted upon *by the drills.

Nll`urther,"said invention has for its object to. provide a machinehaving an` upright frame portion composedfof angle iron members havingbearings 1n which the operating `shaftis mounted.

Further, said invention has forfitsfl'object to'provide a machine havinga r1g1d upright frame portion providedwith bearings in 'which anoperating shaft iis mounted, and

which frame portionis composed ofarplurality of angle iron membershavingapertures therein through which'a pair ofdrill- Vhead supporting `rodsextend and 'which by their secur'ement to said. angle iron mem-v bersserve to aid' in bracingv said' upright frame.V f Further, saidinvention has for its object to provide a machine of the Atype vspecified whose frame, in end elevation,v is approximately L-shaped toprovide a relatively low support to permit of the easy placing andremoval of the tie thereon Without danger of striking or injuring thebits or drills.

" Further, said invention has` for its`object to provide al relativelylight, portablemachine which maybek readily moved from 1928. seria; No.286,291.

progresses. Y j

Further, said invention has for its object to provide a machine in whichthe drill heads are adjustable to suit different gauges ,off tracks, andto suit dilerent sized rail bases, and in whichl the drills and. theirheads may be readily n retracted or withdrawn after vcompletion. of vthedrillingA operation. f

' Other objects will in partbe obvious and in part be pointed outhereinafter.

To the attainmentjoffthe 'aforesaid objects `and ends,-my` inventionconsists inthe novel v features of eonstruction,"and in thelcombination, connectiomandarrangement of parts hereinaftermore'fullyfdescribedand then --pointed out in the claims. e l

" In the 'accompanying drawings, in which is shown one form of machineembodying my'said'invention--- -V :Figure lis a perspective view ofthemachine with a `tie fin position thereon" ready to be drilled;l`v v Fig.2 is a plan view ofthe same;

Fig. 3' is an end elevation thereof;`

Fig.' 4 is j an' enlarged vertical longitudinal sectionall view partlyin elevation showing one of thedrillheads, and 5' 'i Fig. 5 isY a detailplanview of one ofthe drillllifter yoke plates] j' In? saidfdrawingg thebase frame member `comprises* front and rear longitudinal angle ironmembers 1Q which are bolted or other- 'lwiseI secured atl Sito theyfrontandrear angle f7, "i" `denote.diagonal braces connecting the framemembers 1,2, `and 6, and `serving to `render "thestructurerigid, 'and tohold the fsam'e to rectangularfo'rm.

In order toholda tie duly in position upon l the base frame, clamping'bars 9 are secured page @page as val@ fork of ,fak laying at to thecorner posts 2. The said bars 9 are provided with bearing blocks inwhich work clamping screws 16 having pointed ends adapted tobe forced ashort distance into the front face of a tie when said screws 15 areactuated by the hand wheels 17. The bars 9 are pivotally linked to theupright corner posts 4 by horizontal clamping bars 11, having recesses14 in the rear ends adapted to engage with lugs or studs 13 on the rearcorner posts 4, as shown at Figs. 1 and 3.

The rear corner posts 4 are also provided with suitable bearing blocks15, within which work similar clamping screws 16 which are adapted toengage the rear face of a tie, in, line with the clamping screws 16 atthe front of the machine.

19 denotes an operating shaft mounted in ybearing blocks 18 secured tothe rear upright posts 4, 5, and provided at its opposite endswithoperating cranks 20.

l The upright posts 4, 5 are rigidly braced by transverse drill-headsupporting rods 21 which are arranged parallel to the operating shaft 19and extend through suitable apertures in said posts and have their endsscrewthreaded to receive nuts 22, see Figs. 1 and 4.

23 denote four drill heads which are mounted in two pairs or sets uponthe rods 21 between each pair of posts 4, 5. Each drill head comprisesan upwardly extending portion 24 having a transverse bearing aperture 25to receive the operating shaft 19, and transverse bearing apertures 26,27 arranged below said shaftaperture 25, to receive the rods 21. l:[hebearing apertures 26, 27- are preferably made in the form of splitclamps 28, to permit of the same being firmly secured in adjustedposition upon the rods 21, by means of screws 29.

Each drill head 23 includes a horizontal Vbearing 30 in which works agear shaft 33 on the opposite ends of which are fixed bevel gears 34,35. Each drill head 23 further includes a forwardly projectinghorizontal arm 31 provided at its forward end with a vertical bearing 32in4 which is revolubly supported a drill shaft 37. 36 denotes a bevelgear which meshes with the bevel gear 35 von the horizontal shaft 33 andis supported upon the upper end of the bearing 32 and slidablykeyed tothe shaft 37. The gear 36 `is provided with a key 44 which works in agroove 46 in the shaft 37 in order to cause said gear 36 to be rotatablewith said shaft 37 and still permit of extended longitudinal movement ofsaid shafty relative to the bearings 32 and'said gear 36 thereon.

3.8 ydenotes a spring lock or latch vWhose lower free end is adapted` toengage with an Y annular groove 39 in the drill chuck 40, when saidchuck is raised to inoperative position.

The chuck 40 has a socket 41 and set screw 42 whereby to secure the enelof the shank of e @lr-'1.11, 45l in PQ-Sitm within the same, The

chuck 40 is further provided, adjacent to its lower end, with an annulargroove 43 to receive a lifter plate 49 which also acts as a spacingmember or guide to maintain the drill heads duly spaced apart.

Motion is transmitted from the driving shaft 19 to the bevel gear 34, bythe bevel gear 48 which is adj ustably secured upon the shaft 19 by aset screw 47, each drill head having a separate actuating gear 48.

52 designates lifting levers each of which is fulcrumed at 53 upon arear intermediate upright 54, disposed between each pair of uprights 4,5 and secured by the rods 55. Each lever is provided at its forward endwith an aperture to receive the hook 51 of the lifter plate 49, whereby,when said lever is actuated, the chucks 40 and drills 45 may be raisedto inoperative `position after completion of the drilling operation.

The operation of the machine will be largely obvious from the foregoingdescrip tion. It need merely be noted that when a tie is to be drilledthe clamping bars 11 are first unlocked from their lugs or bolts 13 andswung forwardly, and the tie T is then placed in position upon the crossplates 6 of the base. Hereupon the bars 11 are restored, and theclamping screws 16 then actuated by their hand-wheels 17, andthe innerpointed ends thereof forced into engagement with the opposite verticalfaces of the tie to hold the tie rigidly upon the base in the desiredposition. It will be understood, of course, that at this time the drillheads are held in raised or inoperative position. In order now to effecttheV drilling operation it merely becomes necessary to adjust the drillhead units 23 to the proper position upon the parallel rods 21 andthenrelease the chucks 40 from the spring latches` 38 so that the ends ofthe drills or bits 45 may belowered into engagement with the upperhorizontal face of the tie. Hereupon the driving shaft 19 is v rotatedby the cranks 20, and rotation communicatedto the drills 45,. The weightof the drills 45, shafts 37, chucks 40, and associated parts,supplemented by the force which may be exerted upon the plates 49 by thelevers 52 will be sufficient to maintain the drill points up to the workuntil the desired depth of hole has been obtained. vThereafter to removethe drilled tie the operator first withdraws the drills or bits bybearing upon the rear end of the levers 52 until the chucks 40 areengaged and held to raised or inoperative posit-ionv by the springlatches 38. Hereupon the clamping 'screws 16 are releasedk of theiryengagement with the tie, and. the retaining bars 11 'released andswungforwardly out ofthe way, whereupon the tie may be raised and removedfrom the support.

Hav-ing thus described my said invention,

what I claim and desire to secure by Letters Patent is:

In a portable boring machine, a frame composed of a base part and anupright part, means for retaining a tie on said base part,

an operating shaft j ournalled in bearings on said upright part, a pairof drill-headesup- Y porting rods paralleling said shaft and car-74 riedby said upright part, drill heads, said drill heads each comprising anopen frame having top and bottom bars joined at vtheir back ends by vanupright bar and at their front ends by a spindle bearing, said uprightbar having a pair of split bearings t0 receive said supporting rods andincluding clamp ears, clamp screws'in said ears to secure said splitbearings to said supporting rods, said c upright bar having a bearingvat its top for said operating shaft, said head havingV an' upwardlyprojecting portion from its top bar which is provided With a bearing,ashortv shaft journalled in said last named bearing, bevelled gears onthe ends of said short shaft, a bevel gear on said operating shaft tomesh with one of said shortshafts bevel gears,

a spindle mounted in said spindle bearing, a bevel gear on saidspindlemeshing with the other of said short shafts gears, and a chuckcarried by said spindle to receive and hold a bit substantially as shownand described.

Signed at Bogota, Colombia, S. A., thisv 12th day of April, one thousandnine hundred and twenty-eight. Y

JORGE TRIANA.

